From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Tue, 13 Dec 2016 12:24:03 +0000 (+0100)
Subject: s390/zcrypt: add missing memory clobber to ap_qci inline assembly
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=d03502684b65492339d70f11aa8ed6df3961a3bf;p=linux.git

s390/zcrypt: add missing memory clobber to ap_qci inline assembly

The ap_qci() inline assembly writes to memory (*config) but misses to
tell the compiler about it. Add the missing memory clobber to fix
this.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---

diff --git a/drivers/s390/crypto/ap_asm.h b/drivers/s390/crypto/ap_asm.h
index 12fffdd1e8e88..7a630047c372a 100644
--- a/drivers/s390/crypto/ap_asm.h
+++ b/drivers/s390/crypto/ap_asm.h
@@ -108,7 +108,7 @@ static inline int ap_qci(void *config)
 		EX_TABLE(0b, 1b)
 		: "+d" (reg0), "+d" (reg1), "+d" (reg2)
 		:
-		: "cc");
+		: "cc", "memory");
 
 	return reg1;
 }